Seattle: population
Seattle, United States: 1.4 million people in 2025, by the UN estimate.
Rank among the cities of the country: 19 of 348.
In 1975 it had 195,000 people.
In 2000 it had 720,000 people, so it has grown by 95% since then.
For 2050 the UN projects 1.73 million people.
A city here is a dense area of at least 1,500 people per km² with at least 50,000 people, drawn on a population grid by the UN degree of urbanisation. It can differ from the city’s administrative borders and from national statistics. Years from 2026 on are projections.
Largest cities: United States
| City | 2025 | 2050, projected |
|---|---|---|
| New York City | 13,920,148 | 13,224,531 |
| Los Angeles | 12,740,420 | 13,862,284 |
| Houston | 3,955,046 | 5,479,773 |
| Chicago | 3,683,385 | 3,585,359 |
| Washington, D.C. | 3,270,018 | 3,725,730 |
| San Francisco | 3,163,486 | 3,290,101 |
| Miami | 2,912,486 | 3,329,947 |
| Denver | 2,265,994 | 2,718,122 |
| Philadelphia | 2,232,420 | 2,266,409 |
| Las Vegas | 2,183,655 | 2,431,504 |
United States: population and ages
Sources: World Urbanization Prospects 2025, UN DESA Population Division (CC BY 3.0 IGO).